The Use of Dimethyl Ether as a Starting Aid for Methanol-Fueled SI Engines at Low Temperatures

1988 ◽  
Author(s):  
Karl H. Kozole ◽  
James S. Wallace
Keyword(s):  
Dimethyl Ether ◽  
Low Temperatures ◽  
Si Engines

scholarly journals Influence of LPG and DME Composition on Spark Ignition Engine Performance

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5583
Author(s):  
Paweł Fabiś ◽  
Bartosz Flekiewicz
Keyword(s):  
Detailed Analysis ◽  
Dimethyl Ether ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Gaseous Fuel ◽  
Chassis Dynamometer ◽  
Engine Cylinder ◽  
Si Engines ◽  
Thermodynamic Processes

This article presents a detailed analysis of the potential of dimethyl ether (DME) fuel applications in SI engines. This paper presents the tests results completed on an 1.6-dm3 Opel Astra engine fueled by gaseous fuel as a mixture of LPG and DME. Dimethyl ether is a fuel with properties similar to liquid LPG fuel. In addition, DME is very well miscible with LPG, hence the possibility of creating a mixture with any DME divisions. The assessment of the possibility of using DME as a component of the mixture was carried out with the use of a chassis dynamometer and equipment, enabling an analysis of the changes taking place inside the cylinder. The results of the analyses are the parameters of the thermodynamic processes describing changes in the engine cylinder.

scholarly journals Selective synthesis of propylene via homologation of ethylene with dimethyl ether at low temperatures on zeolites

2020 ◽  
Vol 305 ◽  
pp. 110387
Author(s):  
Pieter Struelens ◽  
Pierre Jacobs ◽  
Delphine Minoux ◽  
Jean-Pierre Dath ◽  
Nikolai Nesterenko ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Low Temperatures ◽  
Selective Synthesis

scholarly journals A combined experimental and theoretical study of reactions between the hydroxyl radical and oxygenated hydrocarbons relevant to astrochemical environments

2014 ◽  
Vol 16 (8) ◽  
pp. 3466-3478 ◽  
Author(s):  
R. J. Shannon ◽  
R. L. Caravan ◽  
M. A. Blitz ◽  
D. E. Heard
Keyword(s):  
Hydroxyl Radical ◽  
Dimethyl Ether ◽  
Low Temperatures ◽  
Theoretical Study ◽  
Rate Coefficients ◽  
Oxygenated Hydrocarbons ◽  
P Rate

Rate coefficients for the reactions of the hydroxyl radical with acetone and dimethyl ether increase dramatically at very low temperatures.

scholarly journals Change Of Dimethyl Ether To Lower Alkenes In Boron And Phosphorus-Containing Catalysts

2020 ◽  
Vol 02 (11) ◽  
pp. 34-43
Author(s):  
Sh.Ch. Aslanov ◽  
◽  
A.Q. Buxorov ◽  
N. I. Fayzullaev ◽  
◽  
...  
Keyword(s):  
Quantum Chemical Calculations ◽  
Dimethyl Ether ◽  
High Temperatures ◽  
Low Temperatures ◽  
Quantum Chemical ◽  
Catalytic Conversion ◽  
Lower Olefins ◽  
Phosphorus Containing

In this study, the possibility of the formation of lower olefins from dimethyl ether and methanol on catalysts containing Mg-Zn-Zr-B-HSZ and Mg-Zn-Zr-P-HSZ was studied, and the process was evaluated quantum chemically. According to the results obtained by IR-Fur spectroscopy, during the catalytic conversion of DME (dimethyl ether) on the surface of catalysts containing Mg-Zn-Zr-B-HSZ and Mg-Zn-Zr-P-HSZ ketenes at temperatures below 180 °C and oxonium intermediates at 320 °C (intermediate). compounds) are confirmed by experimental spectra and theoretical quantum-chemical calculations. It was shown that the formation of olefins below DME occurs by the carbene mechanism at low temperatures and by the oxonylide mechanism at high temperatures.

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